former congresswoman gabrielle giffords, her husband, mark kelly and wayne lapierre from the nra testified and frequently sparred with the senate panel about how to solve the gun violence problem. fox's jennifer davis has more now. >> you must act. >> reporter: former congresswoman gabby giffords makes an emotional appeal for tougher gun laws. speaking haltingly two years after she was shot in the head during an assassination attempt that killed six. >> too many children are dieing. too many children. >> reporter: giffords made her dramatic surprise appearance at congress's first hearing on gun controlness is the newtown massacre. the white house and many democrats are pushing ifer re- enstating the assault weapon's game limiting the ammunition magazines to 10 rounds and mandating universal background checks to close the so-called gun show loophole. >> the best way to stop a bad guy from getting the gun in the first place is a good background check. >> reporter: the head of the nra said more school security and mental health resources are what is really needed, adding his group opposes exp